For the AB ringflash i never have chance to try, with the Dynalite i working between 800w and 1000wthe Danylight ringflash its very similar to Multiblitz ringflash for the weight is not a big matter with 24-105mm maybe with the 70-200mm f2.8 is better to work with tripodThe 7D make a really good job in studio when i need more detail i take medium format 6x8 fuji 680 gx iiior Rz 67 its the key for take near 200milions px.

My experience between AB, Einstein, Hensel, Bowens, Norman and assorted Chinese strobes was that the color was virtually identical at medium to full power with color shifting on all (except Einstein) as the power went below about 1/4 or 1/8. For almost all my work I need higher outputs so the color shift is not really an issue.The differences for me lay in size, modifier mount and maximum output.

The ABs are great value but I note inconsistent output at low settings. I also do not like the mounts but otherwise a great tool. I have friends with Dynalite and have admired the compactness and quality of the units. They are very happy with the quality of light.

A note that I would make is that the ringlight is rated at 3200Ws maximum INPUT. The images above were powered by the 2000 Ws power pack. It is no slouch but it does not deliver 3200Ws.